PTC Resettable Fuses

Use the filters and product table below to compare PTC Resettable Fuses components by manufacturer, availability, pricing reference and technical specifications. Review datasheets and key parameters to narrow the selection for your application.

If you already have a target part number, package, rating or quantity, send the requirement to Winsun (HK) Electronics for availability checks, BOM sourcing, shortage support and quotation assistance.

Parametric Selection Filter options by technical parameters

Stock & Datasheets Review availability and technical references

RFQ & BOM Support Send your target MPN, quantity or BOM

Mfr. Part #	Availability	Price	Quantity	Datasheet	Package/Case	Series	Packaging	Product Status	Type	Voltage - Max	Current - Hold (Ih) (Max)	Current - Trip (It)	Current - Max	Time to Trip	Resistance - Initial (Ri) (Min)	Resistance - Post Trip (R1) (Max)	Resistance - 25°C (Typ)	Operating Temperature	Grade	Qualification	Ratings	Mounting Type	Size / Dimension	Height - Seated (Max)	Thickness (Max)	Lead Spacing
RXEF375-0.476 PTC RESET FUSE 72V 3.75A RADIAL Littelfuse Inc.	6,980	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RXEF	Bulk	Obsolete	Polymeric	72V	3.75 A	7.5 A	40 A	24 s	30 mOhms	80 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	1.071" Dia x 0.118" T (27.20mm x 3.00mm)	1.252" (31.80mm)	-	0.400" (10.15mm)
RXEF375K-0.144 PTC RESET FUSE 72V 3.75A RADIAL Littelfuse Inc.	4,374	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RXEF	Bulk	Obsolete	Polymeric	72V	3.75 A	7.5 A	40 A	24 s	30 mOhms	80 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	1.071" Dia x 0.118" T (27.20mm x 3.00mm)	1.252" (31.80mm)	-	0.400" (10.15mm)
2920L125PR-A PTC 15V POLYFUSE SURF MOUNT 2920 Littelfuse Inc.	7,807	-	RFQ	Datasheet	2920 (7351 Metric), Concave	POLY-FUSE®, 2920L	Tape & Reel (TR)	Active	Polymeric	15V	1.25 A	2.5 A	40 A	2 s	70 mOhms	250 mOhms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.290" L x 0.202" W (7.36mm x 5.12mm)	-	0.039" (1.00mm)	-
LVRL100S PTC RESET FUSE 120V 1A RADIAL Littelfuse Inc.	4,538	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, LVRL	Bulk	Obsolete	Polymeric	120V (135V Int)	1 A	2 A	10 A	13.6 s	180 mOhms	470 mOhms	-	-20°C ~ 85°C	-	-	-	Through Hole	0.453" L x 0.161" W (11.50mm x 4.10mm)	0.791" (20.10mm)	-	0.200" (5.08mm)
RXEF375-2 PTC RESET FUSE 72V 3.75A RADIAL Littelfuse Inc.	5,183	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RXEF	Tape & Reel (TR)	Obsolete	Polymeric	72V	3.75 A	7.5 A	40 A	24 s	30 mOhms	80 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	1.071" Dia x 0.118" T (27.20mm x 3.00mm)	1.252" (31.80mm)	-	0.400" (10.15mm)
AHRF450S-1.0 PTC RESET FUSE 16V 4.5A RADIAL Littelfuse Inc.	9,967	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, AHRF	Bulk	Obsolete	Polymeric	16V	4.5 A	8.7 A	100 A	4 s	1.7 mOhms	54 mOhms	-	-40°C ~ 125°C	Automotive	AEC-Q200	-	Through Hole	0.409" L x 0.118" W (10.40mm x 3.00mm)	0.614" (15.60mm)	-	0.200" (5.08mm)
SMD1812P200TFA PTC RESET FUSE 8V 2A 1812 Littelfuse Inc.	4,728	-	RFQ	Datasheet	1812 (4532 Metric), Concave	POLY-FUSE®, SMD1812	Tape & Reel (TR)	Obsolete	Polymeric	8V	2 A	3.5 A	40 A	2 s	20 mOhms	60 mOhms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.179" L x 0.128" W (4.55mm x 3.24mm)	-	0.045" (1.15mm)	-
15LT070U PTC RESET FUSE 15V 700MA STRAP Littelfuse Inc.	6,130	-	RFQ	Datasheet	Strap	POLY-FUSE®, LT	Bulk	Obsolete	Polymeric	15V	700 mA	1.5 A	100 A	5 s	100 mOhms	340 mOhms	-	-40°C ~ 85°C	-	-	-	User Defined	0.827" L x 0.199" W (21.00mm x 5.05mm)	-	0.047" (1.20mm)	-
RGEF1000K PTC RESET FUSE 16V 10A RADIAL Littelfuse Inc.	4,064	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RGEF	Bulk	Obsolete	Polymeric	16V	10 A	17 A	100 A	6 s	4 mOhms	10.2 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.650" L x 0.098" W (16.50mm x 2.50mm)	-	-	0.199" (5.05mm)
SMD1812P014TFA PTC RESET FUSE 60V 140MA 1812 Littelfuse Inc.	7,928	-	RFQ	Datasheet	1812 (4532 Metric), Concave	POLY-FUSE®, SMD1812	Tape & Reel (TR)	Obsolete	Polymeric	60V	140 mA	340 mA	10 A	150 ms	1.5 Ohms	6 Ohms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.179" L x 0.128" W (4.55mm x 3.24mm)	-	0.053" (1.35mm)	-

WINSUN SOURCING SUPPORT

Need Help Sourcing PTC Resettable Fuses?

Send the target part number, manufacturer, specifications and quantity. Winsun (HK) Electronics can assist with availability checks, quotation support, shortage sourcing and alternative-part options when appropriate.

Availability and lead-time support BOM, shortage and alternative sourcing

Send part number & quantity Request a Quote

Need sourcing assistance? Contact Sales

FREQUENTLY ASKED QUESTIONS

PTC Resettable Fuses FAQ

Common questions about filtering, comparing and sourcing PTC Resettable Fuses components.

How can I narrow the PTC Resettable Fuses selection?

Use the available manufacturer and technical parameter filters to reduce the product list. Compare the remaining part numbers against your electrical, package and application requirements.

Should I confirm the datasheet before selecting a part?

Yes. Always review the manufacturer datasheet to confirm ratings, package, operating conditions and other technical details before finalizing a component for your design.

Can Winsun (HK) Electronics help source a specific PTC Resettable Fuses part number?

Yes. Send the exact manufacturer part number and required quantity for availability, lead-time and quotation support.

Do you support BOM, shortage or alternative-part requirements?

Yes. You can submit a BOM or shortage list for sourcing assistance. Where appropriate, our team can also help review possible alternative-part options.